electric motors and drives anderson sc
Electric motors and drives technical manual 2010 edition
Ngày tải lên :
12/01/2014, 10:43
... Slip
-
ring
motors, commutator motors and brake motors
can all be made in
flameproof versions.
No external parts may cause sparks.
The motors must have both an interna
l and an external earthing screw.
Pressurized ... closely on the IEC standards (for example,
Germany's VDE 0530 standard and Great Britain's BS 2613 Standard
closely parallel the IEC 34
-
1 standard).
The N
EMA and IEC standards are quite ... major
categories: NEMA and IEC (and its derivatives).
In North America, the National Electric Man
ufacturers Association
(NEMA) sets motor standards, including what should go on the
nameplate (NEMA Standard...
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Electric Machines and Drives Part 1 pot
Ngày tải lên :
21/06/2014, 01:20
... measurement
method, as described in the Institute of Electrical and Electronics Engineers (IEEE) “Standard
Test Procedure for Polyphase Induction Motors and Generators” IEEE 112-B and in its Canadian ... Medium voltage motors
• Repaired motors
• TENV and TEAO enclosures
It’s relevant to notice that regulation concerning single phase and three-phase small (42/48
and 56 frame) motors is ready, ... be obtained from orders@intechweb.org
Electric Machines and Drives, Edited by Miroslav Chomat
p. cm.
ISBN 978-953-307-548-8
ELECTRIC MACHINES
AND DRIVES
Edited by Miroslav Chomat
Contents
VI
Swarm...
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Electric Machines and Drives Part 2 docx
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21/06/2014, 01:20
... Canada with the adoption of Standard CAN/CSA-
Electric Machines and Drives
14
Fig. 7. Stator Premium motors
Fig. 8. Rotor Premium motors
Electric Machines and Drives
16
Fig. 11. ... incentives and voluntary measures for the energy efficiency of
electric motors is not sufficient, as it is prerequisite to implement mandatory measures for
Electric Machines and Drives
22 ... (2008a) “Barriers and incentive policies to high-efficiency motors
and drives market penetration,”. IEEE International symposium on power
electronics, electrical drives, automation and motion SPEEDAM...
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Electric Machines and Drives part 6 ppt
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21/06/2014, 01:20
... L
m
d
dt
i
s
(26)
102
Electric Machines and Drives
where R
s
, R
r
, L
s
and L
r
are the stator/rotor resistances and inductances, L
m
is the magnetizing
inductance, J is the rotor inertia, B is the viscous ... f
), a proportional integral compensation is proposed, as follows
100
Electric Machines and Drives
Electric Machines and Drives
90
incorporated into a vector controlled induction motor drive. ... I
s
=
I
qs
, I
ds
, λ
r
=
λ
qr
, λ
dr
and V
s
=
V
qs
, V
ds
denote stator current,
rotor flux and stator voltage vectors, where subscripts d and q stand for vector components in
(q-d) reference...
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Electric Machines and Drives part 7 ppt
Ngày tải lên :
21/06/2014, 01:20
... ω
r
Ψ
d
rc
(62)
v
d
sc
= R
rc
i
d
sc
+ L
sc
di
d
sc
dt
−ω
c
L
sc
i
q
sc
+ L
mc
di
d
rc
dt
−ω
c
L
mc
i
q
rc
v
d
sc
= R
sc
i
d
sc
+(L
sc
i
d
sc
+ L
mc
i
d
rc
)s −(L
sc
i
q
sc
+ L
mc
i
q
rc
)ω
c
v
d
sc
= R
sc
i
d
sc
+
dΨ
d
sc
dt
−ω
c
Ψ
q
sc
(63)
v
d
rc
= ... ω
p
Ψ
q
rp
(58)
Electrical system equations for control machine:
v
q
sc
= R
sc
i
q
sc
+ L
sc
di
q
sc
dt
+ ω
c
L
sc
i
d
sc
+ L
mc
di
q
rc
dt
+ ω
c
L
mc
i
d
rc
v
q
sc
= R
sc
i
q
sc
+(L
sc
i
q
sc
+ L
mc
i
q
rc
)s ... L
mp
i
d
rp
)ω
p
126
Electric Machines and Drives
The flux linkage current relations are:
Ψ
q
rc
= L
sc
i
q
sc
+ L
mc
i
q
rc
Ψ
d
sc
= L
sc
i
d
sp
+ L
mc
i
d
rc
(59)
v
q
sc
= R
sc
i
q
sc
+
dΨ
q
sc
dt
+ ω
c
Ψ
d
sc
(60)
v
q
rc
=...
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Electric Machines and Drives part 8 pdf
Ngày tải lên :
21/06/2014, 01:20
... voltages v
rGa
and v
rGb
, the IM rotor speed ω
mM
and its
estimation
ˆ
ω
mM
, the estimated IM load torque
ˆ
τ
ML
, and the estimated IM speed, given by
132
Electric Machines and Drives
52.6 52.65 ... 1999.
144
Electric Machines and Drives
equation
¯
σ
q
= L
sq
L
rq
− L
2
mq
,
¯
σ
d
= L
sd
L
rd
− L
2
md
, p is the poles pairs and n is the relationship
between the number of turns for auxiliary and ... L
mc
di
d
sc
dt
−ω
r
L
mc
i
q
sc
0
q
r
= R
r
i
d
r
+(L
r
i
d
r
+ L
mp
i
d
sp
− L
mc
i
d
sc
)s +(L
r
i
q
r
+ L
mp
i
q
sp
− L
mc
i
q
sc
)ω
r
0
q
r
= R
r
i
d
r
+
dΨ
d
r
dt
+ ω
r
Ψ
q
r
(67)
The electrical...
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Electric Machines and Drives part 9 potx
Ngày tải lên :
21/06/2014, 01:20
... in electric drives. The excellent characteristics of PSO may be successfully
used to optimize the performance of electric machines and electric drives in many
aspects. It is estimated that, electric ... 2009. IECON ’09. 35th Annual
Conference of IEEE, pp. 1003 –1008.
160
Electric Machines and Drives
Electric Machines and Drives
168
Are
all possible operating
conditions optimized
varying ... 3. Motor parameter identified in simulation.
154
Electric Machines and Drives
Swarm Intelligence Based Controller for
Electric Machines and Hybrid Electric Vehicles Applications
163
r
M
L
lM
L
mq
L
lr
+
-
(1/k)
ω
r
λ
dr
+
-
V
qs
r
r
i
qs
i
qr
R
qf...
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Electric Machines and Drives part 11 docx
Ngày tải lên :
21/06/2014, 01:20
...
Electric Machines and Hybrid Electric Vehicles Applications
191
(a) The power sharing between FC and SC on NEDC driving cycle
(b) The power sharing between FC and ... the optimal power
sharing based PSO and the comparative study for the FC /SC powertrain are summarized in
Fig.21 [Hegazy et. al 2010].
Electric Machines and Drives
192
(c) The Comparative ... respect to pure fuel cell without SC
Fig. 21. The results of the optimal power Control for FC /SC
Swarm Intelligence Based Controller for
Electric Machines and Hybrid Electric Vehicles Applications...
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Electric Machines and Drives part 12 pot
Ngày tải lên :
21/06/2014, 01:20
... function of stator flux and currents is given by:
Electric Machines and Drives
218
the speed signal. Since there is no need for speed and position signals, a DTC scheme
appears to be a ... references and estimated values of
torque and flux magnitude and also uses the position of the estimated flux vector. The
torque and flux magnitude error signals are the inputs to the torque and flux ...
Correa et al. (2004). The transformation matrix and its application can be written as
Electric Machines and Drives
226
voltage vector and then will be synthesized by a PWM technique (Jabbar...
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Báo cáo y học: "Comparison of Classical and Clozapine Treatment on Schizophrenia Using Positive and Negative Syndrome Scale of Schizophrenia (PANSS) and SPECT Imaging"
Ngày tải lên :
02/11/2012, 11:12
... rights reserved
Comparison of Classical and Clozapine Treatment on
Schizophrenia Using Positive and Negative Syndrome Scale of
Schizophrenia (PANSS) and SPECT Imaging
Research paper
Received: ... frontal and cerebellum have no significant correlation with PANSS scores.
Int. J. Med. Sci. 2005 2
86
Figure 2: SPECT by 99mTc-ECD in a 39 year-old drug naïve schizophrenia, pre (up) and post ... times the day before the scans with PANSS, a 33-item scale with 1 to 7
points (normal to extremely abnormal) for each item and sub-scores for 7 positive, 7 negative, and 16 global psychopathological...
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Distributed Algorithms and Protocols for Scalable Internet Telephony
Ngày tải lên :
06/11/2012, 10:35
... describe an implementation of this protocol in software, and discuss applications
we have built with it.
We consider interconnection with the telephone network, and focus on the problem of
discovery ... service
discovery problem. After reviewing existing protocols for resource discovery (and finding them
lacking for wide area applications), we present a scalable protocol for wide area service discovery,
which ... that carries voice and video between two points on an IP network. The
transport system is responsible for handling packet loss, packet jitter, and delay. On the
Internet, voice and video transport...
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Hegel’s analysis of mind and world - the Science of Logic
Ngày tải lên :
01/11/2013, 08:20
... content.
Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p..
Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p..
The Science of Logic
sense of mind and ... how
his old friend (and later opponent), Schelling, was to construe Hegel for
posterity.
Science of Logic,p.; Wissenschaft der Logik, ,p..
Science of Logic,p.; Wissenschaft der Logik, ... als
kritische Theorie der Bedeutung (Paderborn: Ferdinand Sch¨onigh, ).
Hegel, Science of Logic,p.; Wissenschaft der Logik, ,p.; HeW, ,p..
Hegel’s analysis of mind and...
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Kantian paradoxes and modern despair - Schopenhauer and Kierkegaard
Ngày tải lên :
01/11/2013, 08:20
... comic.”
Schelling’s
Kierkegaard’s Journals (trans., selected, and with an introduction by Alexander Dru) (New York:
Harper and Row, ), Remark .InConcluding Unscientific Postscript, he ... its
phenomena, and would accrue precisely to the most perfect of them,” ibid., ,p.;
§
.
Schopenhauer and Kierkegaard
abandoned Kantian moral and political hopes altogether. Schopenhauer,
ahead ... of
Fries and his school.
Schopenhauer’s own life overlapped that of the post-Napoleonic gen-
eration: he was born in , and he died in . Because his father
was a wealthy businessman, Schopenhauer...
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- 2
History and Nature of Science
Ngày tải lên :
02/11/2013, 17:20
... curing
diseases, and solving global and environmental prob-
lems. Scientists also seek to use, predict, and control
nature—to use sunlight and water for electrical power
generation, to forecast the weather and ... will
briefly describe the nature of scientific knowledge and
how beliefs and controversies play a part.
Facts
Scientific knowledge is dependent and inseparable from
facts. The principles of the scientific ... and tries to make it work again, so the scientist looks at nature and tries to understand it. The curiosity
CHAPTER
History
and Nature
of Science
IN THIS chapter, you will read about what drives...
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